Definition of "resignalling"

All layout remodelling and resignalling at Stafford has already been finished; the colour-light signals, with their route-indicators, and the power-operated points are operated from the lever frames of existing signalboxes.

1962 October, “Talking of Trains: The L.M.R. electrification”, in Modern Railways, page 220

"The cost of resignalling is astronomical, and you'd be talking about hundreds of millions of pounds and a pretty lengthy blockade to rip all this stuff up and remodel the tracks."

2018, Rail, issue 857, July 18-July 31, article on Severn Bridge Junction signal box at Shrewsbury

It is hoped that this will be increased to 18tph [trains per hour], but this is dependent on resignalling.

2019 October, John Glover, “Heathrow rail expansion”, in Modern Railways, page 72